A5191HRT: Industrial HART-Protocol Modem
A5191HRT is a single-chip, CMOS modem for use in highway addressable remote transducer (HART) field instruments and masters. The modem and a few external passive components provide all of the functions needed to satisfy HART physical layer requirements including modulation, demodulation, receive filtering, carrier detect, and transmit-signal shaping. The A5191HRT is pin-compatible with the SYM20C15. See the Pin Description and Functional Description sections for details on pin compatibility with the SYM20C15. The A5191HRT uses phase continuous frequency shift keying (FSK) at 1200 bits per second. To conserve power, the receive circuits are disabled during transmit operations and vice versa. This provides the half-duplex operation used in HART communications.
Features- Low power
- Bell 202 shift frequencies of 1200 Hz and 2200 Hz
- Single-chip, half-duplex 1200 bits per second FSK modem
- Transmit-signal wave shaping
- Receive band-pass filter
- Meets HART physical layer requirements
- CMOS compatible
| Benefits- Optimal for intrinsically safe applications
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Applications- Highway Addressable Remote Transducer (HART) field instruments and masters
| End Products- Instrumentation Terminals and Measurement Devices
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Application Notes (2)
Evaluation Board Documents (5)
Data Sheets (1)
| Document Title | Document ID/Size | Revision | Revision Date |
|---|
| HART Modem | A5191HRT/D (154kB) | 9 | Sep, 2016 |
Package Drawings (3)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| A5191HRTNGEVB | Active | Pb-free | Hart Modem QFN Evaluation Board |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| A5191HRTLG-XTD | Active | Pb-free
Halide free | LQFP-32 | 561AB | 3 | Tray JEDEC | 250 | Contact BDTIC |
| A5191HRTLG-XTP | Active | Pb-free
Halide free | LQFP-32 | 561AB | 3 | Tape and Reel | 2500 | Contact BDTIC |
| A5191HRTNG-XTP | Active | Pb-free
Halide free | QFN-32 | 488AM | 3 | Tape and Reel | 5000 | Contact BDTIC |
| A5191HRTPG-XTD | Active | Pb-free
Halide free | PLCC-28 | 776AA | 3 | Tube | 37 | Contact BDTIC |
| A5191HRTPG-XTP | Active | Pb-free
Halide free | PLCC-28 | 776AA | 3 | Tape and Reel | 750 | Contact BDTIC |
Specifications
| Product | Data Transmission Standard | Data Rate | Number of Drivers | Number of Receivers | VCC Min (V) | VCC Max (V) | tPLH Max (µs) | IO Max (µA) | IIH Max (mA) |
|---|
| A5191HRTLG-XTD | HART | 1200 baud | 1 | 1 | 3 | 5.5 | 0.02 | 670 | 0.0005 |
| A5191HRTLG-XTP | HART | 1200 baud | 1 | 1 | 3 | 5.5 | 0.02 | 670 | 0.0005 |
| A5191HRTNG-XTP | HART | 1200 baud | 1 | 1 | 3 | 5.5 | 0.02 | 670 | 0.0005 |
| A5191HRTPG-XTD | HART | 1200 baud | 1 | 1 | 3 | 5.5 | 0.02 | 670 | 0.0005 |
| A5191HRTPG-XTP | HART | 1200 baud | 1 | 1 | 3 | 5.5 | 0.02 | 670 | 0.0005 |
